by Office of Population Research, Princeton University in Princeton, N.J .
Written in English
|LC Classifications||HB1321 .S7|
|The Physical Object|
|Pagination||xii, 164 p. ;|
|Number of Pages||164|
|LC Control Number||56004265|
E.J. Masoro, in Encyclopedia of Gerontology (Second Edition), Availability of Life Table Data. Life tables contain the mortality characteristics of an animal population. Such information as the median length of life, the age of tenth percentile survivors, etc., is readily obtained from the table. A complete life table contains data for every single year of age. An abridged life table typically contains data by 5- or year age intervals. A complete life table can easily be aggregated into 5- or year age groups (refer to the. Technical Notes. at the end of this report for instructions). Other than the decennial life tables, U.S. A period life table is based on the mortality experience of a population during a relatively short period of time. Here we present the period life table for the Social Security area this table, the period life expectancy at a given age is the average remaining number of years expected prior to death for a person at that exact age, born on January 1, using the mortality. Introduction to Life Tables Life tables are used to describe age-specific mortality and survival rates for a population. When this information is combined with fecundity data, life-tables can be used to estimate rates of population change (e.g., r, lambda, and Ro). I. Types of Life Tables 1. Cohort or age-specific or dynamic life tables: data.
Population Biology: Life Tables & subject can be found in a general biology text book such as Campbell (), while a more complete discussion of pop-ulation biology can be found in an ecology text (e.g., Begon et al. ) or in one of the references listed at the end of and estimate r from life table data. Thus, model life tables are essential demographic tools for populations lacking accurate demographic data. The principles underlying each of the existing model life tables are discussed below. UN model life tables (). The first set of model life tables was published by the UN in However, for large samples, the life- table method is still popular in that it provides a simple summary of a large set of data. Construction of a Life Table We will give a brief introduction to the subject in this section. For a complete account of life-table analysis, we suggest the books by Lee () and Elandt-Johnson and Johnson (). Period life expectancy by age and sex for the UK. Each national life table is based on population estimates, births and deaths for a period of three consecutive years. Tables are .
The life table construction is complete with the implementation of Step 7. Selected Features of the Life Table. We will examine some features of the constructed life table that are relevant to the construction and interpretation of a multiple-decrement life table: 1. Sum of the values in Column 4 . Life Table Construction Sample Life Table Data Age Category # deaths # surviving Prop (lx) nx lx Log 10 dx qx Tx ex Years 8 0 50 32 7 40 28 13 85 life tables originated, the time variable normally is a person’s attained age and is denoted x. The function µ(x) is then called the force of mortality or death intensity (see Hazard Rate). The life-table function l x = S(x) is called the decrement function and is tabulated for integer x in complete life tables;. The very simple life table consists of a set of rows, each row representing a discrete period of time, say a year, and columns for different mortality status for the time period. Table is a typical example of a simple life table constructed from the spinal injury data. Here the first column represents the age of the injury (number of years.